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An Improved Delayed Signal Cancelation for Three-Phase Grid Synchronization with DC Offset Immunity

Author

Listed:
  • Issam A. Smadi

    (The Department of Electrical Engineering, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan)

  • Ibrahem E. Atawi

    (The Department of Electrical Engineering, Faculty of Engineering, University of Tabuk, P.O. Box 741, Tabuk 47512, Saudi Arabia)

  • Ammar A. Ibrahim

    (The Department of Electrical Engineering, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan)

Abstract

The presence of the DC components in the grid voltage adversely affects the performance of the synchronization unit, causing oscillatory and offset errors in the estimated grid information. Several approaches were proposed to address the DC offset problem by incorporating an additional filtering stage to the synchronous reference frame phase-locked loop (SRF-PLL). Removing the DC offset using the modified delayed signal cancelation (MDSC) operator in the inner loop of the SRF-PLL shows a good DC offset elimination with a fast-dynamic response. However, neither a straightforward selection procedure for the MDSC parameters nor a general estimation technique for the grid information is provided. Hence, a generalization for the MDSC is proposed in this paper based on general mathematical expressions to cancel out the DC offset, while meanwhile estimating the grid parameters precisely and rapidly against any delay factor selection. Finally, comprehensive simulation and experimental results compared with other related PLLs are presented to demonstrate the effectiveness of the proposed work.

Suggested Citation

  • Issam A. Smadi & Ibrahem E. Atawi & Ammar A. Ibrahim, 2023. "An Improved Delayed Signal Cancelation for Three-Phase Grid Synchronization with DC Offset Immunity," Energies, MDPI, vol. 16(6), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2873-:d:1102445
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    References listed on IDEAS

    as
    1. Tie Li & Yunlu Li & Junyou Yang & Weichun Ge & Bo Hu, 2019. "A Modified DSC-Based Grid Synchronization Method for a High Renewable Penetrated Power System Under Distorted Voltage Conditions," Energies, MDPI, vol. 12(21), pages 1-19, October.
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    Cited by:

    1. Mohammad A. Bany Issa & Zaid A. Al Muala & Pastora M. Bello Bugallo, 2023. "Grid-Connected Renewable Energy Sources: A New Approach for Phase-Locked Loop with DC-Offset Removal," Sustainability, MDPI, vol. 15(12), pages 1-17, June.
    2. Bayan H. Bany Fawaz & Issam A. Smadi & Saher A. Albatran & Ibrahem E. Atawi, 2024. "Advanced Single-Phase PLL-Based Transfer Delay Operators: A Comprehensive Review and Optimal Loop Filter Design," Energies, MDPI, vol. 17(2), pages 1-44, January.

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